Medium severity · published May 25, 2026
CVE-2026-48589
Apache Shiro: Jakarta EE open redirect via untrusted Referer in post-login redirect flow
5.4
CVSS
0.4%
EPSS
No
On KEV
Description
Apache Shiro’s Jakarta EE module used the HTTP Referer header in certain cases to issue redirect after a user login.
In affected versions, insufficient validation of this client-controlled value could allow an attacker to influence the redirect target in applications using the Jakarta EE module.
This issue affects Apache Shiro from 2.0-alpha to 2.2.0, and 3.0.0-alpha-1, only when using shiro-jakarta-ee integration module.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 29% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AS
Apache Shiro · Apache Software Foundation
2.0.0-alpha-0 through 2.2.0; 3.0.0-alpha-0 through 3.0.0-alpha-1 · source: vendor
SH
Shiro · Apache
2.0.0 before 2.2.1; 3.0.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-48589
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-48589
Vendor Advisory
https://shiro.apache.org/security-reports.html#cve_2026_48589
Mailing List
http://www.openwall.com/lists/oss-security/2026/05/25/9
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